Art of manufacturing bands for spinning and twisting machines and machine therefor



(No Model.)

- H. G. HALL. ART OF MANUFACTURING BANDS FOR SPINNING AND TWISTINGMACHINES AND MACHINE THEREFOR.

No. 440,476. Pat nted Nov. 11,1890.

H \g S II II i 'Sx W W/TNESSES:

UNITED STATES PATENT ()EFIcE.

HENRY G. I-lALL, OF SHELBY, NORTH CAROLINA.

ART OF MANUFACTURING BANDS FOR SPlNNlNG AND TWISTING MACHINES ANDMACHINE THEREFOR.

SPECIFICATION forming part of Letters Patent No. 440,476, dated November11, 1890.

Application filed January 10,1890. Serial No. 336,544. (No model.)

To aZZ whom it may concern.-

Be it known that I, HENRY G. HALL, of Shelby, in the county of Clevelandand State of North Carolina, have invented a new and useful Improvementin the Art of Manufacturing Bands for Spinning and Twisting Machines andMachines Therefor, of which the following is a full, clear, and exactdescription.

Heretofore in the manufacture of bands such as are used for drivingspindles of spinning and twisting frames-the same have been made in whatare called loop-bandiug machines, in which two live-spindles and onesliding dead-spindle are used, each provided with a hook for carryingthe cord or strands of which the band is composed. The two hookedlive-spindles are arranged at one end of the machine and the slidinghooked deadspindle at or near the other end thereof. One end of what maybe termed the cord, but which consists of continuous loose strands, istied at its one end onto the hook of the one live-spindle. Then saidcord is passed around the hook of the dead-spindle and returned orbrought back and secured at its other end to the hook of the otherlivespindle. The live-spindles are then rotated to put the twistinto thestrands, which, by shortening the cord, causes the dead-spindle that isheld back by a weight to slide forward its extreme limit. The machine isthen stopped and the one end of the cord lifted from off the onelive-spindle and transferred to the other live-spindle, which continuesto carry the opposite end of the cord, and which is then revolved in anopposite direction to that in which it previously moved for the purposeof twisting the two lines of cord together to form the band. This atfirst causes the band to lengthen by reason of the reverse twist firstgiven to the strands, the dead-spindle then sliding back a givendistance; but as the two lengths of cord are continued to be twistedtogether the band begins to shorten, the deadspindle sliding forwardagain a certain distance with or as drawn by the band. The

band is then removed from the machine and thrown across a frame, whenall the twist which was given it as it shortened and the dead-spindlemoved forward ,as last described,

runs out or is lost. A band thus made lacks in both durability andefficiency, owing to its not being stretched and its liability when inuse to slacken, thereby causing much waste. All this I obviate bytreating the band as a belt and stretching it after it has shortened bythe twisting of the two lengths of cord together until a large amount ofextra twist has been put in and afterward subjectingit while sostretched to tension for a sufficient length of time for the final twistto become set. A band thus made will be thoroughly stretched before itis applied to its work, will not be liable to slacken when in use, thuspreventing soft bobbins, and will largely exceed in durability bands asordinarily made.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 represents a plan of a band making or twisting and stretchingmachine enibodying my invent-ion. Fig. 2 is a side elevation of thesame. Fig. is a further side elevation, in part, showing thedead-spindle in position when forced back. Fig. 4 is a transversesection upon the irregular line 0000 in Fig. 3. Fig. 5 is a plan view ofthe hook end of the dead-spindle; and Fig. 6 is a longitudinal sectionalview of a screw-adjusting means used 011 the holder, which keeps theband at its stretch until the final twist put in the band has becomeset.

A is the dead-spindle, having a hook I) on its forward end and fitted toslide back and forth through standards 0 c, mounted on the bed B of themain frame.

0 O are the hooked live-spindles, fitted to rotate in bearings d at theopposite end of the bed, and which may be driven bya band (not shown)passing over a pulley e and-whirls f f. This, together with theattachment of a cord 9 to the rear end of the dead-spindle and passingover a. pulley h on the main frame, and having a weight 1' attached toit to draw the dead-spindle back, is or may be the same as in theordinary loop-banding machines hereinbefore referred to. The hook I) onthe deadspindle, however, is grooved at its forward end, as at k, for apurpose that will be hereinafter described. A dog Z is secured to thedeadspindle, the uses of which will also be hereinafter explained.

The operation up to a certain point is the same as that of an ordinaryloop-banding ma chine. Thus the doubled line of strands, yarns, orrovings, or what has been termed the cord, as shown in Fig. 1, is firstpassed round the hook I) on the dead-spindle and its two ends fastened,respectively, to the hooks of the live-spindle O C, and the latterrotated to put the twistinto the strands, which shortens the cord andcauses the dead-spindle A to move forward to its extreme limit, as shownin Fig. 1. The machine being stopped, one end of the cord is removedfrom the onelive-spindie 0 and hitched-onto the other livespindle C,which then carries both ends of the cord, after which said live-spindleis revolved in an opposite direction for the. purpose of twisting thetwo lines of cord together to form the band D, and which first causessaid band to lengthen and the dead-spindle A to move a given distanceback, and so that the dog Z will travel from its extreme forwardposition (shown in Fig. 1) to the position shown for it by dotted linesin Fig. 2, after which the band, continuing to twist, shortens, causingthe dead-spindle to be moved forward until its dog Z assumes theposition shown for it by full lines in Fig.2. This operation having been.completed, the novel feature of my invention now begins. Thus, insteadof taking oif the band when the dog Z reacts or reaches in theshortening of the band the position shown forit by full lines in Fig. 2,and when the band has heretofore been called finished, I force said dogand dead-spindle on which it is adjustably held by a set-screw Z", tosuit different lengths of band,back, more or less, say to the extremelength of its backward movement, as shown by full lines in Fig. 3, oreven less, and thereby stretch said band. In this stretched conditionIremove the band to a tension-holder, and keep it there until the finaltwist hasbecome set, and thereby increase its usefulness and verylargely so its durability, and make it so that it will not be liable toget slack or stretch when in use, thus avoiding the many evilsconsequent thereon. The means shown for doing this consists, in thefirst place, ofa hand-lever E, which as it is moved in direction of thearrow 3 moves the dog Z, with its attached dead-spindle, back from theposition shown by full lines in Fig. 2, to the position, say, shown forit inv Fig. 3, said lever-E thus moving said dog by means of aconnecting-rod m, attached to a crank m on its rock-shaft and at itsother end to a crank nvupon'a rock-shaft 0, that carries an arm 1',provided with a roller, which bears against the dog Z. This stretchesthe band, as described, and partly sets the twist; but before thusstretching the band I first remove by hand the one-looped end of it fromthe live-spindle O, on which it is secured, and engage said end with atoothed disk G on a tension-holder H, and then move the dog Z back togive the stretch, as described, until the hook I) on the dead-spindlejust passes overa second toothed disk G, which is then moved up to causea tooth on it to pass up the groove 7a in the hook I) and to engage withthe loop on the end of the band on said hook and to lift such end of theband from the hook b, after which said disk G is lowered again to itsnormal position and the stretched band is allowed to remain on the disksG G some few hours, more or less, until the extra twist given to it isfully set.

The holder H consists, mainly, of a length of gas pipe or tube a,resting in an open bearin g b at each end, and the toothed disks G G,carried by said tube. These disks are adjustable on or along said tubeto suit different lengths of band by fitting them to slide thereon. andadjusting and holding them in position when adjusted by means of screwbolts 0 within each end of the tubea, provided with keys d at theirforward ends, arranged to pass through slots 6 in the tube and bearingagainst the hubs of the disks, and nuts f, fitting the screw-threads onthe back or outer ends of the bolts 0.

The end of the tube a, carrying the disk G, is raised to cause the saiddisk to lift the band from the hook I) of the dead-spindle, ashereinbefore described, by suitably pressing on a lever I, which may beoperated by the knee and is arranged to bear on the under side of thatend of the tube a which carries the disk G, thus raising said end of thetube and disk G along with it, as required. By screwing up the nuts fthey will also stretch the band if put on too slack, and the disks G Ghave their teeth so closely arranged around their perimeters that theywill serve to hold a large number of bands under stretch at the sametime. The same band-holder H' may also be used for stretchingmule-spindle bands, one end of which may be fastened to atooth and thecord or band woven backward and forward on the disks, after-which thenuts f may be screwed up, thereby giving a powerful stretch to the bandand dispensing with the appliances now used. in cotton and woolen millsfor taking up the slack of mule-banding.

It should here be observed that the pith of the invention, as heredescribed, consists in holding the baud stretched after it has beenfully twisteduntil the finaltwist put therein in the operation oftwisting, and during which the band is shortened, has becomeset,.irrespective of the means by which this is doneas, for instance,Whether bya separate holder or otherwise, or, if desired, bytransferring the stretched band to the spindle direct it is designed todrive.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. The method hereindescribed of makingcord-like bands suitable for spinning and twisting machines,whichconsists in first twisting the yarns or rovings together in independentcord-like lengths, then twisting in a reverse direction said cord-likelengths about each other, and then after the final twist has been put inthe band, as described, forcibly stretching said band and holding itunder tension till the final twist has been set, substantially asspecified.

2. In machines for making cord-like bands for spinning and twistingmachines, the com bination, with the rotating live-spindles and with thesliding dead-spindle thereof, of means adapted to stretch the band afterthe two cord-like lengths of it have been twisted together in a reversedirection to that in which said lengths were independently twisted,substantially as herein set forth.

3. In a machine for making and stretching bands of the character hereindescribed, the combination, with the two live-spindles O and oppositesliding dead-spindle A, of the dog Z on said dead-spindle and ahand-lever mechanism adapted to force said dog and dead,- spindle back,essentially as and for thepurposes herein set forth.

4. In a machine for making and stretching bands of the character hereindescribed, the combination, with the two live-spindles, the slidingdead-spindle of the machine, and a hand mechanism adapted to force saiddeadspindle back and to stretch the twisted band, of a separate holderadapted to receive the twisted and stretched band and to hold it undertension, substantially as specified.

5. In a machine for making and stretching bands of the character hereindescribed, the holder 11, provided with two opposite end disks G G,having teeth on their perimeters,

6. In a machine of the character herein described, the combination, withthe hook h on the sliding dead-spindle A, provided with a groove 70 onits exterior, of the holder H, having toothed disks G G and supported soas to be capable of being raised, and means for raising the same andadapted to project a tooth of one of said disks up through or within thegroove k in the hook 19, substantially as and for the purpose hereinspecified.

7. In a machine for making and stretching bands of the character hereindescribed, the combination, with the sliding dead-spindle A,live-spindles O C, and with a hand mechanism adapted to force saiddead-spindle back and to stretch the band after it. has been twisted, ofthe band-holder H, provided with toothed disks G G, near its oppositeends made adjustable toward or from each other, essentially as and forthe purposes herein set forth.

8. In a machine of the character herein described, the band-holder H,consisting of a tubular spindle at, having longitudinal slots 6 6' nearits opposite ends, the adjustable toothed disks G G, the screws orscrew-bolts c', havin g keys d, arranged topass out through said slots,and the nuts f on the outer ends of said bolts, substantially asspecified.

HENRY G. HALL.

Witnesses:

O. 1?. ROBERT, R. L. SIMMONS.

